User's Manual

6
2. Hardware Specification
2.1 Antenna Electrical Specification
Parameter Typical Units
Operating frequency range
13.56 MHz
Communication distance
> 20 mm
3. Product Requirements
3.1 Hardware Requirements of NFC module
Form factor
15 mm x15mm module with 11-pin FPC connector
Host Interface
BSC (I
2
C -compatible) interface
PCB
4-layer design
3.2 Hardware Architecture of NFC module
The T77H446.0X NFC module is based on Broadcom BCM20792S1 solution, which is
integrated NFC subsystem, interfaces, and microprocessor and memory unit. This module
is powered from the host (3.3V) and interfaces to the host with I
2
C signals and with one-
printed antennas, one on-board 26 MHz XTAL and option for one Secure Element (eSE)
with 800kBytes flash memory.
The functional block diagram is shown as below.